Steel plate coloring device and coloring method

Abstract

A steel plate coloring device according to an embodiment of the present invention may comprise: a body unit provided on a transfer path of steel plates; and an irradiation unit, provided on the body unit, for irradiating, on the surface of the steel plates, a laser in the form of a line with respect to the width direction of the steel plates so as to give color to the surface of the steel plates. In addition, a steel plate coloring method according to another embodiment of the present invention may comprise: a placement step for placing, on steel plates, an irradiation unit which irradiates a laser in the form of a line on a transfer path of a steel plate; and an irradiation step for irradiating the laser, at one time, on a region corresponding to the width of the steel plates which are continuously transferred.

1 . A steel plate coloring device, comprising:
 a body unit provided on a transfer path of a steel plate; and   an irradiation unit provided in the body unit, and irradiating, onto a surface of the steel plate, a line-shaped laser in a width direction of the steel plate, so as to provide color to the surface of the steel plate.   
     
     
         2 . The steel plate coloring device of  claim 1 , wherein the irradiation unit includes:
 an irradiation support unit coupled to the body unit;   a point irradiation unit provided as a plurality of point irradiation units disposed in parallel in the irradiation support unit, and emitting the laser; and   a linear lens portion provided to be connected to ends of the plurality of point irradiation units from which the laser is emitted.   
     
     
         3 . The steel plate coloring device of  claim 2 , wherein the irradiation support unit includes:
 a line member provided to allow the plurality of point irradiation units to be arranged linearly, and of which a position is adjusted to correspond to a width of the steel plate.   
     
     
         4 . The steel plate coloring device of  claim 3 , wherein the irradiation support unit further includes:
 a motor coupled to the body unit, and   the line member is connected to a rotation shaft of the motor, and adjusts a position by means of rotation.   
     
     
         5 . The steel plate coloring device of  claim 4 , wherein the line member has a center portion in a width direction of the steel plate connected to the rotation shaft of the motor. 
     
     
         6 . The steel plate coloring device of  claim 4 , wherein the line member is provided as a plurality of line members, and is provided to be spread to correspond to the width of the steel plate. 
     
     
         7 . The steel plate coloring device of  claim 3 , wherein the irradiation support unit further includes:
 a driving cylinder coupled to the body unit; and   a guide tab formed to protrude from an upper end or a lower end of the line member, and slidingly inserted into a guide groove formed in the body unit, and   the line member, provided as a plurality of line members, is connected to one end of the driving cylinder, provided as a plurality of driving cylinders, and adjusts a position by means of linear movement.   
     
     
         8 . The steel plate coloring device of  claim 1 , wherein the irradiation unit is provided in at least one of an upper member of the body unit in an upper surface of the steel plate and a lower member of the body unit in a lower surface of the steel plate. 
     
     
         9 . The steel plate coloring device of  claim 2 , wherein the irradiation support unit includes:
 a surface member provided to allow the plurality of point irradiation units to be disposed on a plane.   
     
     
         10 . The steel plate coloring device of  claim 1 , wherein the irradiation unit includes:
 an irradiation control portion electrically connected to a point irradiation unit, and individually adjusting energy density of laser irradiated by the point irradiation unit provided as a plurality of point irradiation units.   
     
     
         11 . The steel plate coloring device of  claim 1 , wherein the body unit includes:
 a base member; and   a guide roller coupled to the base member, and provided to be in contact with a lateral edge of the steel plate so as to guide movement of the steel plate.   
     
     
         12 . A steel plate coloring method, comprising:
 a placement operation of placing an irradiation unit, irradiating a line-shaped laser onto a transfer path of a steel plate, on the steel plate; and   an irradiation operation of irradiating lasers simultaneously onto a region corresponding to a width of the steel plate being continuously transferred.   
     
     
         13 . The steel plate coloring method of  claim 12 , wherein the placement operation includes:
 a width measuring operation of measuring the width of the steel plate; and   a position adjusting operation of adjusting a position of the irradiation unit to the region corresponding to the width of the steel plate, having been measured.